VEVOR Ultrasonic Cleaner 30L with Heater Timer 28/40 KHZ Upgraded Dual Frequency Professional Ultrasonic Cleaner

30L Dual Frequency Ultrasonic Cleaner.Dual-bands series includes 10 units of different sizes which can be used to clean not only small stuffs, like jewelries, but also big stuffs, like carburetors etc. Based on the 40KHz and 28KHz cleaning modes, all ultrasonic cleaners do better in clean stuffs with complex-shaped surface or blind holes than single-frequency ultrasonic cleaners. Besides, heating function is beneficial to remove oil and wax. With heating and timing function, use only tape water, if needed, some solutions, things can be cleaned thoroughly in minutes. No scratching created, great for business, commercial or home.